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Feeding Conjugated Linoleic Acid without a Combination of Medium-Chain Fatty Acids during Late Gestation and Lactation Improves Pre-Weaning Survival Rates of Gilt and Sow Progeny

机译:在妊娠后期和哺乳期饲喂共轭亚油酸而不结合中链脂肪酸,可提高母猪和母猪后代的断奶前存活率

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Feeding conjugated linoleic acid (CLA) or medium-chain fatty acids (MCFA) to dams has been shown to improve progeny growth and survival, and hence may be particularly advantageous to gilt progeny. Primiparous ( n = 129) and multiparous sows ( n = 123; parities 3 and 4) were fed one of four diets from day 107 of gestation (107.3 ± 0.1 days) until weaning (day 27.2 ± 0.1 of lactation): (i) control diet; (ii) 0.5% CLA diet; (iii) 0.1% MCFA diet; and (iv) equal parts of (ii) and (iii). Progeny performance data were collected and, from a subset of sows ( n = 78) and their piglets ( n = 144), a colostrum (day 0), milk (day 21), and piglet serum sample (day 3) were analyzed for immunoglobulin G and several selected metabolites. Liveborn pre-weaning mortality tended to be lowest ( p = 0.051) in piglets from sows fed 0.5% CLA. However, sows fed the CLA diet had more ( p = 0.005) stillbirths than those on the other diets. There were few effects of diet or the dam parity x diet interaction ( p ≥ 0.05) on other parameters. Overall, feeding CLA or MCFA did not improve the performance of primiparous sows, multiparous sows, or their progeny.
机译:向大坝喂食共轭亚油酸(CLA)或中链脂肪酸(MCFA)已显示可改善子代的生长和存活,因此可能对后备母猪特别有利。从妊娠第107天(107.3±0.1天)到断奶(哺乳期27.2±0.1天),对初生(n = 129)和多胎母猪(n = 123;胎3和4)喂养四种饮食之一:控制饮食; (ii)0.5%的CLA饮食; (iii)0.1%MCFA饮食; (iv)(ii)和(iii)的相等部分。收集后代性能数据,从母猪的一部分(n = 78)及其仔猪(n = 144)中,分析初乳(第0天),牛奶(第21天)和仔猪血清样本(第3天)的含量。免疫球蛋白G和几种选定的代谢产物。饲喂0.5%CLA的母猪的仔猪断奶前的死亡率往往最低(p = 0.051)。但是,饲喂CLA日粮的母猪死胎比其他日粮中的母猪更多(p = 0.005)。饮食或水坝均价×饮食相互作用(p≥0.05)对其他参数几乎没有影响。总体而言,饲喂CLA或MCFA不能改善​​初产母猪,多胎母猪或其后代的性能。

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